diff --git a/Gemfile.lock b/Gemfile.lock
index e9c191a..e13cd6a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,10 +14,8 @@ GEM
       git (>= 1.2.5)
       rake
       rdoc
-    json (1.6.5)
     rake (0.9.2.2)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.3.2)
     rspec (1.2.9)
     session (3.1.0)
       fattr